Flying with with Revo, GPS< flying modes
« on: January 14, 2016, 11:39:58 pm »
Hello

I have quite a bit of experience with other systems like APM, Baseflight, Cleanflight, etc but I've been thinking about using LibrePilot with a Revo + GPS in a FPV flying wing. The problem is I can't find much documentation about it. I know the wizard will help me set it up but what about flight modes, stabilization modes, PID tuning, etc?

All the best

f5soh

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Re: Flying with with Revo, GPS< flying modes
« Reply #1 on: January 14, 2016, 11:56:24 pm »
Hi,
You should setup at least Manual, Attitude and Acro+ as stabilization modes.

For Revo calibration and others assisted modes look here:
https://librepilot.atlassian.net/wiki/display/LPDOC/Advanced+features

For Pid tuning you can use the TxPid module and affect a knob to Roll or Pitch Pids with EasyTune feature.
https://librepilot.atlassian.net/wiki/display/LPDOC/TxPID

Welcome,
Laurent

Re: Flying with with Revo, GPS< flying modes
« Reply #2 on: January 15, 2016, 02:04:48 am »
Thanks for the reply. And those modes mean the same as for multirotors?

Re: Flying with with Revo, GPS< flying modes
« Reply #3 on: January 15, 2016, 02:39:16 am »
No.

Manual is zero stabilization.  Don't use manual with multicopters
Also, Rattitude and CruiseControl should ONLY be used on multicopters

f5soh

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Re: Flying with with Revo, GPS< flying modes
« Reply #4 on: January 15, 2016, 07:27:22 am »
Rattitude works perfectly with Flying Wing :)

"Manual" means you have direct control to servos thought board, like a normal setup Rx+servos.

Re: Flying with with Revo, GPS< flying modes
« Reply #5 on: January 15, 2016, 04:07:24 pm »
I hesitated with that one (Rattitude) since I had never tested it on fixed wing and had not heard of anyone who had.

Re: Flying with with Revo, GPS< flying modes
« Reply #6 on: January 15, 2016, 04:12:59 pm »
Thanks for all the replies so, just to be clear I understand how they work on fixed wings:
Manual - bypass everything, direct control to the servos
Attitude - Full stabilization, surfaces level when there's no stick input
Acro+ - Rate mode?
Rattitude - Full stabilization up to some point of input and then rate?

Re: Flying with with Revo, GPS< flying modes
« Reply #7 on: January 15, 2016, 08:10:00 pm »
That's a good summary.  Acro+ is like sensitive Rate mode, but with a lot of expo to make it less sensitive around center stick.

Re: Flying with with Revo, GPS< flying modes
« Reply #8 on: January 15, 2016, 08:14:53 pm »
That's a good summary.  Acro+ is like sensitive Rate mode, but with a lot of expo to make it less sensitive around center stick.

That sound a lot of fun on a fast jet :)

f5soh

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Re: Flying with with Revo, GPS< flying modes
« Reply #9 on: January 15, 2016, 09:21:57 pm »
Acro+ is "rate" around stick center and "manual" (direct command) at full stick.

With Acro+ no need to set a high rate velocity, can be 90degrees/s so no need expo, but rolls are done at max possible velocity without any limitation because max roll stick give max aileron deflection.

Re: Flying with with Revo, GPS< flying modes
« Reply #10 on: January 16, 2016, 01:19:09 pm »
I decided to start small using a CC3D Atom in a bobcat. It does not have a rudder so can I configure as a normal airplane and just ignore rudder?

f5soh

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Re: Flying with with Revo, GPS< flying modes
« Reply #11 on: January 16, 2016, 04:07:18 pm »
Rudder is optional, no problem.

Re: Flying with with Revo, GPS< flying modes
« Reply #12 on: January 16, 2016, 07:51:28 pm »
Good to know, thanks.
I'm having a strange behaviour. I'm using a Taranis with a D4R-II  (CPPM). Despite the fact I'm pretty sure the channel 4 (yaw/rudder) is correct, the radio wizard does not detect it. The others are fine AFAICT. Any tips?

f5soh

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Re: Flying with with Revo, GPS< flying modes
« Reply #13 on: January 16, 2016, 08:07:36 pm »
Try monitoring activity and move Yaw stick only.

SystemTab > UavoBrowser and search for ReceiverActivity

If not detected maybe is already detected as a wrong input, this can appears with channels that has to much jitter.